# OPEN vs BAT

The clearest difference is rating: BAT at 3.2 against OPEN's 2.0. BAT also leads on review sentiment (24% vs 9%) and update cadence (every 3 weeks vs every 2 months). OPEN's advantage is iOS requirement (8.1 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BAT holds the better App Store score, 3.2 against 2.0. Both are backed by a comparable volume of ratings — 14 and 61 respectively. Written reviews point the same way: 9% of OPEN's written reviews are positive against 24% of BAT's.

OPEN ships an update every 2 months, BAT every 3 weeks. Both last shipped on October 16, 2026.

## The numbers

| Metric | OPEN | BAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (14 ratings)](https://appshunter.io/ios/app/open-lit/id1224878047/reviews) | **[3.2 (61 ratings)](https://appshunter.io/ios/app/bat-bms/id1611741274/reviews)** |
| Number of ratings | 14 | **61** |
| Positive reviews | 9.1% of reviews | **24.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 44 MB | 9 MB |
| Requires iOS | **8.1** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OPEN·LIT](https://appshunter.io/developer/1224878046) | [Shenzhen Grenergy Technology Co.,Ltd.](https://appshunter.io/developer/1602312075) |

## What reviewers say

### OPEN

[App page](https://appshunter.io/ios/app/open-lit/id1224878047)

Control smart home and commercial lighting, security, and office devices with this multi-functional app. It supports both Wi-Fi and Bluetooth mesh devices, offering features like dimming, color temperature adjustment, and scene control.

**Highlights:** Wi-Fi and Bluetooth mesh device control, LAN and remote control, Dimming, color temperature, RGB, RGBW, RGBCCT control, Timing and DIY modes, Group and scene control, Music and microphone synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


### BAT

[App page](https://appshunter.io/ios/app/bat-bms/id1611741274)

Monitor your smart Bluetooth lithium batteries wirelessly from your phone. Track key metrics like state of charge, voltage, current, and temperature. Connect to multiple batteries simultaneously and view their data.

**Highlights:** Wireless Bluetooth connection, Track cycle life, Display SOC, voltage, current, Monitor cell voltage and temperature, Connect to multiple batteries

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OPEN free?

OPEN is free to download, with no in-app purchases.

### Is BAT free?

BAT is free to download, with no in-app purchases.

### Which has better reviews, OPEN or BAT?

BAT is rated higher. OPEN averages 2.0 out of 5 from 14 ratings, while BAT averages 3.2 from 61 ratings.

### Do OPEN or BAT have ads?

Neither OPEN nor BAT shows ads.

### Which is updated more often, OPEN or BAT?

OPEN ships an update every 2 months, and BAT every 3 weeks. Most recently, OPEN was updated on October 16, 2026 and BAT on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*